Mandevilla Plant Named &#39;PATMANROS3&#39;

ABSTRACT

A new and distinct Mandevilla plant named ‘PATMANROS3’ which is characterized by an upright and freely branching growth habit, an abundance of dark green foliage, flowers with a white outer floral tube, very light red-purple flower petals that become progressively darker towards and at the margins, a dark red-purple to orange-red inner floral tube, as well as the stability of these characteristics from generation to generation.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to the Community Plant Variety Rightsapplication number 2020/1114, filed Apr. 23, 2020, which is hereinincorporated by reference.

Latin name of the genus and species: The Latin name of the genus andspecies of the novel variety disclosed herein is Mandevilla sanderi(Hemsl.) Woodson.

Variety denomination: The inventive variety of Mandevilla disclosedherein has been given the variety denomination ‘PATMANROS3’.

BACKGROUND OF THE INVENTION

Parentage: The new plant originated as a seedling selection from theopen pollination of a plurality of cultivated Mandevilla sanderi‘Velvet’ plants (not patented), the seed parent, and unnamed Mandevillasanderi plants (not patented) in the spring of 2017. The true pollenparent is unknown. Seed was collected from the ‘Velvet’ plants andgerminated at a greenhouse in Klazienaveen, The Netherlands. Theresulting seedlings were grown to maturity and observed for uniquecharacteristics. In March of 2018, the claimed plant was observed toexhibit a unique flower color relative to the other seedlings from saidcross of 2017 and was selected for commercialization.

Asexual Reproduction: Asexual reproduction of the new cultivar‘PATMANROS3’, by way of softwood stem cuttings, was first initiated inMarch of 2018 in Klazienaveen, The Netherlands. Through more than 6subsequent generations, the unique features of this cultivar have provento be stable and true to type.

SUMMARY OF THE INVENTION

The cultivar ‘PATMANROS3’ has not been observed under all possibleenvironmental conditions. The phenotype may vary somewhat withvariations in environment such as temperature, day length, and lightintensity, without, however, any variance in genotype. The followingtraits have been repeatedly observed and are determined to be the uniquecharacteristics of ‘PATMANROS3’. These characteristics in combinationdistinguish ‘PATMANROS3’ as a new and distinct Mandevilla cultivar:

-   -   1. Mandevilla ‘PATMANROS3’ exhibits an upright, freely branching        growth habit; and    -   2. Mandevilla ‘PATMANROS3’ PATMANROS2’ exhibits an abundance of        dark green foliage; and    -   3. Mandevilla ‘PATMANROS3’ exhibits large flowers; and    -   4. Mandevilla ‘PATMANROS3’ exhibits flowers with a white outer        corolla tube; and    -   5. Mandevilla ‘PATMANROS3’ exhibits flower petals that are very        light red-purple, generally appearing as very pale pink, which        become progressively darker red-purple towards and at the        margins when fully opened; and    -   6. Mandevilla ‘PATMANROS3’ exhibits with a dark red-purple to        orange-red inner corolla tube.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, an exemplary 12 month old‘PATMANROS3’ plant in a 17 cm nursery pot, grown in a greenhouse inKlazienaveen, The Netherlands.

FIG. 2 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, the mature foliage of‘PATMANROS3’.

FIG. 3 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, an exemplary flower of‘PATMANROS3’.

BOTANICAL DESCRIPTION OF THE PLANT

The following observations and measurements were made in April of 2021and describe averages from a sample set of six specimens of 12 month-old‘PATMANROS3’ plants grown in 17 cm nursery pots grown in a greenhouse inKlazienaveen, The Netherlands. Plants were produced using conventionalgreenhouse production protocols for Mandevilla which consisted ofregular overhead and ebb and flood irrigation and fertigationapplications. Pest or disease control measures were utilized inproduction as required. Plants were produced with full sun exposure andno photoperiodic treatments or artificial light was given to the plants.

Those skilled in the art will appreciate that certain characteristicswill vary with older or, conversely, with younger plants. ‘PATMANROS3’has not been observed under all possible environmental conditions. Wheredimensions, sizes, colors and other characteristics are given, it is tobe understood that such characteristics are approximations or averagesset forth as accurately as practicable. The phenotype of the variety maydiffer from the descriptions set forth herein with variations inenvironmental, climactic and cultural conditions. Color notations arebased on The Royal Horticultural Society Colour Chart, The RoyalHorticultural Society, London, 2015 (sixth edition).

A botanical description of ‘PATMANROS3’ and comparisons with the parentsand most similar commercial variety of Mandevilla are provided below.

-   Plant description:    -   -   Growth habit.—Vining perennial; broad upright.        -   Plant shape.—Ovate to obovate to broad obovate.        -   Average height from base to top of foliage.—58.8 cm.        -   Average height from base to top of the floral plane.—54.0            cm.        -   Average width.—36.2 cm.        -   Growth rate.—Moderately fast.        -   Plant vigor.—Moderately vigorous.        -   Propagation method.—Softwood stem cuttings; rooting is in            initiated in approximately 21 days, with a fully rooted            cutting in approximately 6 weeks, when grown in a greenhouse            with an ambient average temperature of 28 to 30 degrees            Celsius.        -   Time to produce a finished plant.—Approximately 9 to 12            months is required to produce a fully rooted and marketable            19 cm plant when grown under greenhouse conditions.        -   Disease and pest resistance or susceptibility.—Plants have            not been observed to be susceptible or resistant to            pathogens and pests common to Mandevilla obesum.        -   Environmental tolerances.—Adapt to at least USDA Zones 10            and 12, and temperatures ranging from at least 5 degrees to            40 degrees Celsius; moderate tolerance to rain; low to            moderate tolerance to wind; low tolerance to drought.-   Root system:    -   -   General.—Freely branching; moderately dense rooting.        -   Texture.—Fibrous.        -   Color.—Light brown.-   Stem:    -   -   Branching habit.—Basally branching main stem; freely            branching with lateral branches. Stems and branches exude a            milky exudate when damaged.        -   Number of main stems per plant.—8.        -   Number of lateral branches per plant.—16.        -   Aspect.—Rounded.        -   Length of lateral branches.—35.6 cm.        -   Diameter of lateral branches.—0.3 cm at the widest point.        -   Internode length on lateral branches.—5.7 cm.        -   Attitude.—Upright; angle is approximately 30 degrees from            vertical.        -   Strength.—Strong.        -   Texture and luster.—Glabrous and moderately glossy.        -   Color, juvenile.—Yellow-green, nearest to RHS 146B; surfaces            exposed to sunlight are a darker shade of yellow-green,            nearest to RHS 152A.        -   Color, mature.—Yellow-green, nearest to a mixture of RHS            146B and 146C; surfaces exposed to sunlight are            greyed-brown, nearest to a mixture of RHS N199A and N199B,            and heavily suffused with yellow-green, nearest to RHS 152A.        -   Color at internodes.—Yellow-green, nearest to RHS 144A;            surfaces exposed to sunlight are greyed-orange, nearest to            in between 166A and 166B.        -   Color of bark on main stems.—Greyed-brown, nearest to a            mixture of RHS N199C and N199D.-   Foliage:    -   -   Arrangement.—Opposite.        -   Division.—Simple.        -   Quantity.—Average of 14 leaves per lateral branch.        -   Lamina.—Dimensions — 6.3 cm long and 4.7 cm wide, on            average. Shape — Obovate to broad elliptic. Aspect — Flat to            very slightly carinate. Apex — Short apiculate to abruptly            acute. Base — Rounded to truncate. Margin — Entire; not            undulated. Pubescence, texture and luster of adaxial surface            — Glabrous, smooth, and glossy. Pubescence, texture and            luster of abaxial surface — Glabrous, smooth, and moderately            glossy. Color — Juvenile foliage, adaxial surface — Nearest            to in between green and yellow-green, RHS 137A and 146A, but            slightly darker. Juvenile foliage, abaxial surface —            Yellow-green, nearest to in between 146A and 146B. Mature            foliage, adaxial surface — Nearest to in between green and            greyed-green, RHS 139A and N189A, but darker. Mature            foliage, abaxial surface — Yellow-green, nearest to in            between RHS 146B and 147B. Venation — Pattern — Pinnate.            Venation color, adaxial surface — Yellow-green, nearest to            RHS 144A. Venation color, abaxial surface — Yellow-green,            nearest to RHS 145B.        -   Petiole.—Length — 1.3 cm. Width — 0.15 cm. Texture — Smooth            and glabrous. Luster — Moderately glossy. Strength —            Moderately strong. Color, adaxial surface — Yellow-green,            nearest to RHS 152A. Color, abaxial surface — Yellow-green,            nearest to RHS 145A.-   Inflorescence:    -   -   Inflorescence arrangement.—Axillary raceme bearing 2 to 6            flowers.        -   Natural flowering season.—Long flowering period; spring            through autumn in USDA Hardiness Zones 10 through 12.        -   Time to flower.—Approximately 10 weeks from planting a            rooted cutting.        -   Dimensions.—13.2 cm long and 10.1 cm in diameter.        -   Quantity of flowers per inflorescence.—4 on average; varying            from 3 to 5.        -   Quantity of flowers per plant.—5.        -   Quantity of flower buds per plant.—31.        -   Quantity of flowers and flower buds per plant.—36.        -   Peduncle.—Dimensions — 6.8 cm long and 0.2 cm in diameter.            Aspect — Upward and outward; at approximately 30 degrees to            the lateral branch axis. Strength — Moderately strong.            Texture and luster — Glabrous and moderately glossy. Color —            Green, nearest to a mixture of RHS 143A and 143B.-   Bud:    -   -   Shape.—Narrow oblanceolate.        -   Dimensions.—5.3 cm long and 0.9 cm in diameter.        -   Pubescence, texture and luster.—Glabrous, smooth and very            slightly glossy.        -   Color.—The distal one-quarter portion of the bud is red,            nearest to RHS 39B; the middle portion is yellow-green,            nearest to RHS 145C; and, the proximal one-third portion of            the bud is yellow-green, nearest to RHS 145A.-   Flower:    -   -   Flowering habit.—Moderately free flowering.        -   Shape.—Funnelform.        -   Flower vertical height.—6.8 cm.        -   Flower width.—6.8 cm.        -   Flower length.—6.3 cm.        -   Diameter of floral throat.—1.3 cm, at its widest point.        -   Floral throat texture.—Glabrous; smooth.        -   Diameter of floral tube.—1.5 cm at the distal end; at            approximately one-third of the distance from the base, where            tube begins to widen, the diameter is 0.4 cm.        -   Length of floral tube.—5.1 cm.        -   Floral tube texture.—Glabrous; smooth.        -   Aspect.—Flowers are outward facing.        -   Fragrance.—A faint pleasant fragrance; acidic-sweet.        -   Lastingness.—Approximately 10 days.        -   Persistent.—Self-cleaning.        -   Pedicels.—Dimensions — 1.8 cm long and 0.2 cm in diameter.            Aspect — Upward and outward; approximately 30 degrees to the            peduncle axis. Strength — Moderately strong. Texture and            luster — Glabrous, smooth, and moderately glossy. Color —            Yellow-green, nearest to RHS 152B.        -   Petals.—Quantity of Petals — 5. Arrangement — Single whorl;            petals imbricate and fused into an elongated tube at the            base; two-thirds of the petals are fused. Shape of petal            lobes — Spatulate. Dimensions, free portion of petals — 7.9            cm long and 3.3 cm wide. Apex — Unequal short apiculate.            Base — Truncate; fused at the base. Margin — Entire;            moderately to highly undulated. Aspect — Moderately            reflexed. Pubescence, texture and luster of upper surface —            Glabrous, velvety and very slightly glossy. Pubescence,            texture and luster of lower surface — Glabrous, moderately            velvety and slightly glossy. Petal lobe color when opening,            upper surface — Red-purple, nearest to RHS N57B, and fading            to a lighter shade of red-purple towards the throat, nearest            to RHS 62C. Petal lobe color when opening, lower surface —            Red-purple, nearest to RHS 62A; central longitudinal band            and base of the petals towards the floral throat are            red-purple, RHS 69D. Petal lobe color when fully opened,            upper surface — Red-purple, nearest to RHS 62A, and becoming            darker towards the margins, nearest to RHS 61D; lighter            towards the throat, nearest to RHS 62C. No visible venation.            Color do not fade with age. Petal lobe color when fully            opened, lower surface — Red-purple, nearest to a mixture of            RHS 69B and 69C, and fading darker towards the margins,            nearest to RHS 62B. No visible venation. Colors do not fade            with age. Floral throat color — Red-purple, nearest to RHS            62C. Floral throat venation color — Red-purple, nearest to            RHS 62C. Inner corolla tube color, when fully opened —            Red-purple, nearest to RHS 62C, and fading to orange-red            towards the narrowest portion of the tube, nearest to a            mixture of RHS 34A and 34B; narrowest part of the tube is            yellow-green, nearest to RHS 151D. Veins are yellow-orange,            nearest to RHS 18B. Outer corolla tube color, when fully            opened — Red-purple, nearest to RHS 69B; lower proximal            one-third portion of the tube is greyed-red, nearest to RHS            178C. No veins are visible.        -   Calyx.—Shape — Rotate; single whorl of sepals. Dimensions —            0.6 cm in diameter and 0.5 cm tall. Sepals — Calyx            dimensions — 0.7 cm in diameter and 0.2 cm tall. Arrangement            — Sepals are free, rotate. Quantity — 5. Shape — Narrow            triangular to lanceolate. Sepal dimensions — 0.7 cm long and            0.2 cm wide at the base. Apex — Narrow acuminate. Base —            Cuneate. Margin — Entire; not undulated. Pubescence, texture            and luster, upper surface — Smooth; glabrous; slightly            glossy. Pubescence, texture and luster, lower surface —            Smooth; glabrous; very slightly glossy. Color when opening,            upper surface — Yellow-green, nearest to RHS 145A; apex is            suffused with greyed-red, nearest to RHS 179B. Color when            opening, lower surface — Yellow-green, nearest to RHS 145A;            apex is suffused with greyed-red, nearest to RHS 179B. Color            when fully opened, upper surface — Yellow-green, nearest to            RHS 145A; moderately to heavily suffused with greyed-red,            RHS 181B, at the apex. Color when fully opened, lower            surface — Yellow-green, nearest to RHS 145A; moderately to            heavily suffused with greyed-red, RHS 181B, at the apex.-   Reproductive organs:    -   -   Androecium.—Stamen quantity — 5. Attachment — Adnate.            Filament length — 0.3 cm. Filament color — Yellow-green,            nearest to RHS 151D. Anther attachment — Basifixed. Anther            shape — Narrow sagitate. Anther length — 1.0 cm. Anther            width — 0.125 cm. Anther color — Greyed-yellow, nearest to            RHS 162C. Anther aspect — The five anthers are touching at            their apices, thus forming a cone of anthers. Pollen,            presence — Scarce. Pollen color — White, RHS 155A.        -   Gynoecium.—Pistil quantity — One. Pistil length — 2.3 cm.            Style length — 2.1 cm. Style color — Yellow-green, nearest            to RHS 150D. Stigma shape — Club-shaped. Stigma length —            0.2 cm. Stigma diameter — 0.2 cm. Stigma color —            Yellow-green, nearest to RHS 150B. Ovary color —            Yellow-green, nearest to RHS 144C.-   Seed and fruit: None observed.

COMPARISONS WITH THE PARENT PLANTS

Plants of the new cultivar ‘PATMANROS3’ differ from the seed parent,Mandevilla ‘Velvet’ (not patented) by the characteristics described inTable 1.

TABLE 1 Characteristic ‘PATMANROS3’ ‘Velvet’ General coloration of Verylight red-purple and Medium to dark the flowers when fully becomingprogressively red-purple. opened. darker towards the margins.

COMPARISON WITH THE MOST SIMILAR MANDEVILLA CULTIVAR KNOWN TO THEINVENTOR

Plants of the new cultivar ‘PATMANROS3’ differ from the commercialvariety, Mandevilla ‘PATMANCR’ (U.S. Plant Pat. No. 29,797), in thefollowing characteristics described in Table 2 below.

TABLE 2 Characteristic ‘PATMANROS3’ ‘PATMANCR’ Growth habit. More freebranching and Less branching and less more densely foliaged denselyfoliaged than than ‘PATMANCR’ ‘PATMANROS3’. Flower size. Smaller thanLarger than ‘PATMANCR’. ‘PATMANROS3’. General coloration Very lightred-purple and Light red-purple. of the flowers when becomingprogressively fully opened. darker towards the margins.

That which is claimed is:
 1. A new and distinct variety of Mandevillaplant named ‘PATMANROS3’, substantially as described and illustratedherein.